Thunderbolt

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jackdaw
Posts: 121
Joined: 16 Feb 2018, 20:30
Location: Wet and Windy North Wales

Thunderbolt

Post by jackdaw » 24 Oct 2019, 20:40

Any one built a Bill Morley 'Thunderbolt'? Got any tips or links to builds etc?
TIA

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F2B
Posts: 114
Joined: 16 Feb 2018, 11:23
Location: 20 m NE of Amsterdam

Re: Thunderbolt

Post by F2B » 24 Oct 2019, 21:41

This must be a vintage design as I can't recall ever having seen one or the plan.

Bruno
F2B or not to be....

Tobe
Posts: 155
Joined: 16 Feb 2018, 06:19
Location: Varberg or Stockholm, Sweden

Re: Thunderbolt

Post by Tobe » 25 Oct 2019, 06:34


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F2B
Posts: 114
Joined: 16 Feb 2018, 11:23
Location: 20 m NE of Amsterdam

Re: Thunderbolt

Post by F2B » 25 Oct 2019, 21:43

jackdaw wrote:
24 Oct 2019, 20:40
Any one built a Bill Morley 'Thunderbolt'? Got any tips or links to builds etc?
TIA
It all depends on what you're expecting from it.
It will prove a handful if you'd be trying the current F2B schedule with the model per plan.
The stab moment arm is -regarding todays standards- very short. For todays standard, look at my avatar >
This results in a lively, rather unstable model.
Therefore, the first thing I would change is using a 4" bellcrank instead of a 3".
This makes the model's behavior a lot 'calmer'.
Use 4 1/2 - 5" handle spacing and the CG at or up to 1/2 " in front of the mainspar.
With that secured, plus the addition of adjustable lead outs and a tip weight box (indispensible trimming aids) I can see this turning into a lovely flying, vintage model.

Reading the description brought a smile to my face.
I mentioned the model being considered 'big'.
Mine is a relatively small one at only 57" span and 62 oz. :mrgreen:

The first 'real' CL aerobatic model I saw was my mentor Paul Tupker's Palmer Thunderbird II Fox .35, 60 ft Laystrate....
LB in Utrecht.jpg
F2B or not to be....

jackdaw
Posts: 121
Joined: 16 Feb 2018, 20:30
Location: Wet and Windy North Wales

Re: Thunderbolt

Post by jackdaw » 25 Oct 2019, 22:43

Thanks for the advice. Both new, both plain bearing, Enya 35 or OS 40FP(ABN)? 60FT - 65FT lines? Just for sport flying.

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